I. noun suffix
Etymology: International Scientific Vocabulary, alteration of -one
: chemical compound not a ketone or other oxo compound
parathi on
II. noun suffix
Etymology: from -on (in ion )
1. : subatomic particle
nucle on
2.
a. : unit : quantum
phot on
magnet on
b. : basic hereditary component
cistr on
oper on
III. noun suffix
Etymology: New Latin, from -on (in argon )
: noble gas
rad on